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Question Consider a mineral having the percent composition 31.34% 0,24.50% Fe, and 44.16% Cr. 1st attempt...
Mineral Composition A mineral sample is obtained from a region of the country that has high...
Mineral Composition A mineral sample is obtained from a region of the country that has high arsenic contamination. An elemental analysis yields the following elemental composition: Element Atomic Weight (g/mol) Percent Composition 55.845 34.3% 74.9216 46.0% 32.065 19.7% Fe As What is the empirical formula of this mineral? (click here if you want step-by-step help to solve this problem) Note that each time you load this page, you will get a new version of this problem. You may want to...
Question (1 point) 1st attempt How many moles of O2 would be needed to cause the...
Question (1 point) 1st attempt How many moles of O2 would be needed to cause the complete combustion of 3.00 g C,Ha? C3H8 (g) + 502 (g) → 3CO2 (g) + 4H2O(g) moles 16 12 OF 16 QUESTIONS COMPLETED
Question (2 points) See page 22 1st attempt See Periodic Table See Hint If all of...
Question (2 points) See page 22 1st attempt See Periodic Table See Hint If all of the energy from burning 318.0 g of propane (A Hcomb.C3H8 --2220 kJ/mol) is used to heat water, how many liters of water can be heated from 20.0°C to 100.0°C? (Assume that the density of water is 1.00 g/ml) L of water < 07/11 D40 ENG 0 OF 11 QUESTIONS COMPLETED e here to search
are these right? im having a hard time on number 2 a-c Experiment 9-Post-lab Questions 1....
are these right? im having a hard time on number 2 a-c
Experiment 9-Post-lab Questions 1. Methanol (CH,OH) can be produced by the reaction o balanced chemical reaction is by the reaction of carbon monoxide (CO) with hydrogen (H). The CO(g) + 2 H (g)-CH2OH) Suppose 14.0 g of carbon monoxide is reacted with 8.0 g of hydrogen 3. Which reactant is the limiting reagent? Carbon monoxide (co) b. What is the theoretical yield for methanol? 16.02 g CH₂OH c....
10 Question (1point) 1st attempt How many grams of N are in 74.0 g of NH4NO3?...
10 Question (1point) 1st attempt How many grams of N are in 74.0 g of NH4NO3? < 10/12 TIONS COMPLETED
2. Will Cd + Zn2+ react? 6. Calculate the percent composition of (CH3)2CO 7. How many...
2. Will Cd + Zn2+ react? 6. Calculate the percent composition of (CH3)2CO 7. How many moles of nickel are in 17.7 g of Ni? 8. Calculate the mass in grams of 1.45 mol of (NHa)2CO3 9. Calculate the formula mass of CuSO4.5H2O: 10. Determine the mass in grams of 24.5 mol of O: __
ercent Composition, Empirical and Section 3 - Calculations (Moles, Percent Composition, Emp Molecular Formulas) In order...
ercent Composition, Empirical and Section 3 - Calculations (Moles, Percent Composition, Emp Molecular Formulas) In order to earn full credit, you must show your work clearly, include units significant figures 1. (pts) You are given 3.50g of TNI, CHN Tou are given 3.50g of TNT. C-HSN:0. Use this starting amount to determine the quantities requested below. k clearly, include units and use reasonable a) Determine the molar mass of TNT: g/mol (no work necessary for this one). b) Determine the...
material Question 3: For an Iron-Iron Carbide (Fe-FesC) phase diagram, answer the following for 5.0 wt%...
material
Question 3: For an Iron-Iron Carbide (Fe-FesC) phase diagram, answer the following for 5.0 wt% C 10 Points How many phases are possible at this composition and what will be the melting temperature at this a) composition? b) the alloy is hypocutectic or hypereutectoid at 800°C at this composition ? c) the alloy is hypocutectic or hypereutectoid at 600°C at this composition? d) composition and amount of each phase at 1250°C at this composition e) composition and amount of...
3rd attempt See Periodic Table See Hint Fe(I) can be precipitated from a slightly basic aqueous...
3rd attempt See Periodic Table See Hint Fe(I) can be precipitated from a slightly basic aqueous solution by bubbling oxygen through the solution, which converts Fe(I) to insoluble Fe(II): 4Fe (OH) (aq)40H (aq) +0,(g) +2H,0(1) » 4Fe (OH)2(s) How many grams of O2 are consumed to precipitate all of the iron in 55.0 mL of 0.0950 MFe(II)? 2nd attempt <13/27 4 VIEW SOLUTION 18 OF 27 QUESTIONS COMPLETED SUBMIT ANSWER
QUESTION 14 1 POINT What is the percent composition of C in Co H14? The atomic...
QUESTION 14 1 POINT What is the percent composition of C in Co H14? The atomic mass of C is 12.01 g/mol; the molar mass of Co H14 is 86.18 g/mol. Select the correct answer below: 83.62% o 88.16% 0 74.88% O 13.95%
Mineral Composition A mineral sample is obtained from a region of the country that has high arsenic contamination. An elemental analysis yields the following elemental composition: Element Atomic Weight (g/mol) Percent Composition 55.845 34.3% 74.9216 46.0% 32.065 19.7% Fe As What is the empirical formula of this mineral? (click here if you want step-by-step help to solve this problem) Note that each time you load this page, you will get a new version of this problem. You may want to...
Question (1 point) 1st attempt How many moles of O2 would be needed to cause the complete combustion of 3.00 g C,Ha? C3H8 (g) + 502 (g) → 3CO2 (g) + 4H2O(g) moles 16 12 OF 16 QUESTIONS COMPLETED
Question (2 points) See page 22 1st attempt See Periodic Table See Hint If all of the energy from burning 318.0 g of propane (A Hcomb.C3H8 --2220 kJ/mol) is used to heat water, how many liters of water can be heated from 20.0°C to 100.0°C? (Assume that the density of water is 1.00 g/ml) L of water < 07/11 D40 ENG 0 OF 11 QUESTIONS COMPLETED e here to search
are these right? im having a hard time on number 2 a-c
Experiment 9-Post-lab Questions 1. Methanol (CH,OH) can be produced by the reaction o balanced chemical reaction is by the reaction of carbon monoxide (CO) with hydrogen (H). The CO(g) + 2 H (g)-CH2OH) Suppose 14.0 g of carbon monoxide is reacted with 8.0 g of hydrogen 3. Which reactant is the limiting reagent? Carbon monoxide (co) b. What is the theoretical yield for methanol? 16.02 g CH₂OH c....
10 Question (1point) 1st attempt How many grams of N are in 74.0 g of NH4NO3? < 10/12 TIONS COMPLETED
2. Will Cd + Zn2+ react? 6. Calculate the percent composition of (CH3)2CO 7. How many moles of nickel are in 17.7 g of Ni? 8. Calculate the mass in grams of 1.45 mol of (NHa)2CO3 9. Calculate the formula mass of CuSO4.5H2O: 10. Determine the mass in grams of 24.5 mol of O: __
ercent Composition, Empirical and Section 3 - Calculations (Moles, Percent Composition, Emp Molecular Formulas) In order to earn full credit, you must show your work clearly, include units significant figures 1. (pts) You are given 3.50g of TNI, CHN Tou are given 3.50g of TNT. C-HSN:0. Use this starting amount to determine the quantities requested below. k clearly, include units and use reasonable a) Determine the molar mass of TNT: g/mol (no work necessary for this one). b) Determine the...
material
Question 3: For an Iron-Iron Carbide (Fe-FesC) phase diagram, answer the following for 5.0 wt% C 10 Points How many phases are possible at this composition and what will be the melting temperature at this a) composition? b) the alloy is hypocutectic or hypereutectoid at 800°C at this composition ? c) the alloy is hypocutectic or hypereutectoid at 600°C at this composition? d) composition and amount of each phase at 1250°C at this composition e) composition and amount of...
3rd attempt See Periodic Table See Hint Fe(I) can be precipitated from a slightly basic aqueous solution by bubbling oxygen through the solution, which converts Fe(I) to insoluble Fe(II): 4Fe (OH) (aq)40H (aq) +0,(g) +2H,0(1) » 4Fe (OH)2(s) How many grams of O2 are consumed to precipitate all of the iron in 55.0 mL of 0.0950 MFe(II)? 2nd attempt <13/27 4 VIEW SOLUTION 18 OF 27 QUESTIONS COMPLETED SUBMIT ANSWER
QUESTION 14 1 POINT What is the percent composition of C in Co H14? The atomic mass of C is 12.01 g/mol; the molar mass of Co H14 is 86.18 g/mol. Select the correct answer below: 83.62% o 88.16% 0 74.88% O 13.95%
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